Ⅰ.阅读理解
阅读下列短文，从每题所给的四个选项(A、B、C、D)中，选出最佳选项。
A
At one time it was the dream for many little girls to become a nurse.Today，however，America is facing its worst nurse shortage since World War Ⅰ.Recently about 2,000,000 nurses are needed and 60 percent of all hospitals in the US have shortages large enough to threaten (＝ say that you will hurt somebody if they don’t do what you want) the quality of care provided.The demand for nurses spreads widely throughout the nursing field.
